Centrifugal cream-separator.



PATBNTED FEB. l2, 1907.

E; W. BROOMALL.

GENTRIPUGAL CREAM SBPARATOR.

APPLICATION FILED SEPT.`5, 1905.

FIGnI Witnesses a UNITED sTArns PATENT onirica.

EDGAR BROOMALL, OF ROCHESTER, NEW YORK.

CENTRIFUGL CREAM-SEPARATOR.

Patented Feb. 12, 1907.

Application /led September 5, 1905. Serial No. 276.959I

To all whom it may concern:

Be it known that I, EDGAR W. BRooMALL, a citizen of the United States, and resident of Rochester, in the county of Monroe and yState of New York, have invented certain new and useful Improvements in Centrifugal Cream-Separatore, of which the following is aspeciiication.

This invention relates to centrifugal creamseparators, and has for its object to provide means whereby separation is enhanced by causing the fluid to separate into two distinct streams under centrifugal force, one stream consisting of the fresh milk as it passes outwardl over the front of the separator-blades an the other stream comprising the cream flowing inwardly over the backs of the blades to the cream-wall.

Other advantages will be pointed out in the specification.

In the drawin @Figure 1 is a top View of a separator-bow and its blades. Fig. 2 is a vertical section of the same on the line 2 2 of Fig. 1, and Figf3 is a cross-section on the line 3 3 of Fig. 1

1 represents t e se arating-bowl of a centrilugal separator. feed-pipe 2 is secured within the bowl, as by the flange 3, and fresh milk is introduced into the lower part of it through vertical rows of ducts or passages 4 in the flange and 4 in the feed-pipe. The number of blades 5 should correspond with the number of vertical rows of passages through which the milk enters the bowl from the feed-pipe, so that the incoming fresh milk from each row of passages will be received on one ofthe blades and conducted byit to the wall of the bowl. It is important that the blades should be removable in order that they may be cleaned, and at the same time they must be braced strongly in their respective positions in the bowl, ecause the large /quantit of fluid between the blades will subject t em to great strain under centrifugal action. The blades are locked together both at their upper and lower edges by bolts 7 and are retained at their proper dis-r tances a art b the sleeves 6 and 6, that surroundp the bolts and abut against the blades. The outer edges of the blades are adapted to lie against the wall of the bowl when the blades are in place, and their inner edges are bent inwarc ly into iianges: 10, which lie against the cream-wall of the feedpipe 2.

In the drawings each bolt is represented as passing through three blades, and accordingly each blade is braced against movement in either direction at three points (both near its upper and its lower edge)-that is to say,

both sleeves 6 and 6 hdld the blades against .of the blades and their distance apart.

'lhis ailords a vsimple yet strong construction and has the additional advantage of iving easy access to the blades, so that t ey can readily be cleaned when removed from the bowl.

The blades are caused'to rotate with the bowl and retained in position therein b stops 8 and 9, one on each side ofthe blade 5, or by otherv suitable means. The bowl rotates in the direction of the arrow in Fig. 1.- Pcrforations 4 and 4, through which the fresh milk is admitted to the bowl, lie justin front of each of the inwardly-turned edges or 'fianges 10 of the blades 5. The milk as it enters the bowl is thrown against the blades by the centrifugal force developed by the rotation of the-bowl and is directed outwardly by them and is spread over them in such a way that the cream separates readily from the milk.

One defect that is common in separators is for the unskimmed'milk as it enters the separator to meet and mix with the separated A cream, and so to retardseparation and prevent the bestresults; but in this separator that is obviated, for the mass of skimmed milk contained in the spaces between the blades effectively separates the l incomingV blades, as aforesaid, romthe cream that is `flowing inwardly'toward the cream-wall of the feed-pipe 2 on the outside of the opposite blades,- respectively,v so that the separated cream cannot become mixed with thexincoming milk.

Two separate'and distinct streams of fluid are set up within this separator when in operation,. One stream consists of the fresh milk as it takes its course outwardly from the inner edge of the blades over their front surfaces and then onto and over the adjacent surface of thebowl, and the other stream con- `milk that is'thrown upon the inside of the IOC sists of the separated cream as it returns over the back of the blades to the cream-wall, Which is the outer surface of the feed-pipe 2. The intermediateI spaces are lilled with the skimmed milk, which is discharged therefrom in the usual Way.

What I claim is` 1. In a centrifugal se arator, the combination with a bowl, of a eed-pipe centrally lo` cated therein, and having a plurality of circumferential perforations leading into said bowl; and a corresponding number oi outwardly-diverging separator-blades whose` inner ends lie, respectively, adjacent to and directlyin front of their individual perforations, cutting, respectively, radii through said perforations, substantially as shown and .de-

scribed.

f 2. In a centrifugal separator, the combination with a bowl, of a feed-pipe centrally located therein, and having a plurality ov circur'rlferential perforations leading into said bowl; and a corresponding number of out` wardly-diverging separator-blades whose inner ends lie, respectively, directly in front of their individual perforations, cutting, respectively, radii through said perforations,

and are then bent inwardly around said perlorations and extended behind them, respectively, to said feed-pipe, substantially as i shown and described.

3. In a centrifugal se arator, the combination with the bowl 1, oli.) trally located therein, and having a plurality of circumferential perforations 4 therein ,land the corresponding number of outwardlydiverging separator-blades 5, whose inner ends 10 lie, respectively, directly in front of said perforations in the feed-pipe, and then are bent inwardly around said perforations, respectively, to the feed-pipe; substantially as shown anddescribed. v

4. A system of separator-blades for a centrifugal separator, comprising a plurality of separated blades held rigidly in proper relation to each other by bolts 7 that pass through said blades, and sleeves 6 and 6 upon said bolts that lie between and abut against said blades, substantially as shown and described. E EDGAR. W. BROOMALL. Witnesses: v

G. C. BLACK-AL1 D. GURNEE.

the feed-pipe 2, cen. 

